Improved mode of preserving telegraph-poles



i To all whom t may concern:

bore a hole Loms s. eoBBINs, oF NEWA YORK, N. Y.

` IMPRVED MODE' 0F PRESERVING `"TELEGFRAl-"H-PLES.'

Specification forming part of Letters Patent No. 89.3115, dated April27, 1869.

Be it known that I, LOUIS S. ROBBINS, of the Y city, county, and Stateof` New York, have inventeda newand Improved Process for Pref servingTelegraph=Poles from Mold andDecay; and I do hereby declare that thefollowing is a clear and exact description thereof, which will enablethose skilled in the art to use and practice the same, reference beinghadpto the accompanying dravvings, forming a partof thisW.specifi-sation? f Itis well known that 4telegraph-poles, vvhen lset upfor use, rapidly decay at or near the Afsnrface oflthe,

A ground, while the upper .part andthat portion embedded in the soilwilllast for many years longer.

' To prevent the-decay of the telegraphpole at or near the ground is theobject f the present invention, and this object is accomplished Ythereby. s

i The method consists in impregnating the pole with au antisepticandpreservati've material which will close the pores and forni such `acombination with the, fiber of the wood as will eectually prevent the`deteriorating effects`ofeither heat or moisture at ordinaryctemperatures.- 1 .Y

- #In carrying out my present invention I rst o r holes, as representedin the accompanyingdrawing.

' 1A A'represen't the` telegraphpoles; B B,

theholes, whicharek made with an auger -or :amyiother4 suitablekinstrument, commencing be thought necessary. 'may beA also applied tothe surface of the pole about fifteen inches above theground, andin;l

4cliinedfat an angle of fortyve degrees, ex-

tending two-thirds through theV diameter'ot the pole; C C, the plug tobe'inserted in the hole B B when filled with the preservative -materiaLYlhe hole or holes may be larger or. smaller, according to thesize ofthe pole which is to be treated. After 4the hole (or holes) has;

(or have) been prepared, it (or they) is or are) then filled from a canor other vessel saving 4aYfegdingespcut..withwhat-ischnowncasrtercofsot/coil, which 'is obtainedby'a distillation of coal-tar at a trilling expense, afterwhich the plugC Gis inserted, which excludes the air and moisture from the orifice.The-hole or holes may be retlled at any time, if it should justxabovethe ground by means of a brush or any other suitable appliance at thetime thel hole (or-holes) is(or are) filled.-

, By this means I' am venabledwithout disturbine; the poles' tosaturatethem .and pre serve them at or near the surface of the groundina rapid and economical manner.

,. What Iclaim as mylinvention, and'desre to secure by LettersPatent,.is

The process of impregnatipg the lowerJ portiori of telegraphpoles withcreosote-oil, subl stantially as herein describedl.- n,

, LOUIS s. ROBBINS.

Witnesses:

. NATHANIEL Gann,

M-.QAHEA/RNE, Jr.- i

The same' material

